| 集值信息系统及其属性约简 |
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| 引用本文： | 管延勇,王洪凯,史开泉. 集值信息系统及其属性约简[J]. 数学的实践与认识, 2008, 38(2): 101-107 |
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| 作者姓名： | 管延勇 王洪凯 史开泉 |
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| 作者单位： | 1. 济南大学,理学院,山东,济南,250022
2. 山东大学,数学与系统科学学院,山东,济南,250100 |
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| 基金项目： | 国家自然科学基金 , 山东省教育厅资助项目 , 济南大学校科研和教改项目 |
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| 摘 要： | 阐明集值信息系统具有知识表达的实际意义;引入关于相容关系的最大相容分类方法对论域中的对象分类,以保证每个相容类中的对象具有共同的属性特征;讨论集值信息系统的属性约简问题,利用区分函数,给出核及约简的求法.
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| 关 键 词： | 集值信息系统 最大相容类 属性约简 区分函数 |
| 修稿时间： | 2005-04-05 |
Set-Valued Information Systems and Its Attribute Reduction |
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| GUAN Yan-yong,WANG Hong-kai,SHI Kai-quan. Set-Valued Information Systems and Its Attribute Reduction[J]. Mathematics in Practice and Theory, 2008, 38(2): 101-107 |
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| Authors: | GUAN Yan-yong WANG Hong-kai SHI Kai-quan |
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| Abstract: | In this paper we study set-valued information systems and its attribute reduction.Firstly,we expound that the study of set-valued information systems is meaningful both in theory and in applications;secondly,and introduce the maximal tolerance classification approach to classify objects of universe in order to ensure that all objects in the same class posses the common attribute values;finally,we discuss attribute reduction of set-valued information systems,and give a calculating approach of core and reduction of attribute by using the discernibility function. |
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| Keywords: | set-valued information systems maximal tolerance class attribute reduction discernibility function |
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